Is the sydney railway undeground constructed "CUT and COVER" method?

Question

Is the sydney railway undeground constructed "CUT and COVER" method?

Answer 1

THE CITY CIRCLE

The most familiar tunnels in Sydney are probably those of the City Circle.

Most of them were built by the cut-and-cover method in the 1920s. The first underground stations, Museum and St. James, were completed and opened to traffic in December 1926. They were electrified from the outset. This system was linked to the North Shore when the Sydney Harbour Bridge was opened in 1932. The City Circle itself was completed with the opening of the Circular Quay loop in 1956, but until that time turnbacks and crossovers had been used.

The City Circle is a complicated system. In one section there is a tunnel running on top of another for half a kilometre. Tunnels cross each other skew-wise at various places. In two Parts there are four tunnels running side by side on the same level.

Answer 2

Much of the City of Sydney was already built up prior to the railways being constructed. As a result tunnels had to be dug, drilled and excavated underground leaving the building above untouched. So, it was not a cut and cover method.

Answer 3

Parts of the City Circle (Central, Town Hall, Wynyard, Circular Quay, St James & Museum) were built as cut and cover.  Manly the eastern side.